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NLM: Change nlm_host_rebooted() to take a single nlm_reboot argument

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Pass the nlm_reboot data structure directly from the NLMPROC_SM_NOTIFY
XDR decoders to nlm_host_rebooted().  This eliminates some packing and
unpacking of the NLMPROC_SM_NOTIFY results, and prepares for passing
these results, including the "priv" cookie, directly to a lookup
routine in fs/lockd/mon.c.

This patch changes code organization but should not cause any
behavioral change.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Chuck Lever 2008-12-05 19:03:31 -05:00 committed by J. Bruce Fields
parent cab2d3c991
commit 7fefc9cb9d
4 changed files with 20 additions and 36 deletions
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31
fs/lockd/host.c
View file

@ -444,31 +444,34 @@ void nlm_release_host(struct nlm_host *host)
}
}
/*
* We were notified that the host indicated by address &sin
* has rebooted.
* Release all resources held by that peer.
/**
* nlm_host_rebooted - Release all resources held by rebooted host
* @info: pointer to decoded results of NLM_SM_NOTIFY call
*
* We were notified that the specified host has rebooted. Release
* all resources held by that peer.
*/
void nlm_host_rebooted(const struct sockaddr_in *sin,
const char *hostname,
unsigned int hostname_len,
u32 new_state)
void nlm_host_rebooted(const struct nlm_reboot *info)
{
const struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr.s_addr = info->addr,
};
struct hlist_head *chain;
struct hlist_node *pos;
struct nsm_handle *nsm;
struct nlm_host *host;
nsm = nsm_find((struct sockaddr *)sin, sizeof(*sin),
hostname, hostname_len, 0);
nsm = nsm_find((struct sockaddr *)&sin, sizeof(sin),
info->mon, info->len, 0);
if (nsm == NULL) {
dprintk("lockd: never saw rebooted peer '%.*s' before\n",
hostname_len, hostname);
info->len, info->mon);
return;
}
dprintk("lockd: nlm_host_rebooted(%.*s, %s)\n",
hostname_len, hostname, nsm->sm_addrbuf);
info->len, info->mon, nsm->sm_addrbuf);
/* When reclaiming locks on this peer, make sure that
* we set up a new notification */
@ -483,8 +486,8 @@ again: mutex_lock(&nlm_host_mutex);
for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {
hlist_for_each_entry(host, pos, chain, h_hash) {
if (host->h_nsmhandle == nsm
&& host->h_nsmstate != new_state) {
host->h_nsmstate = new_state;
&& host->h_nsmstate != info->state) {
host->h_nsmstate = info->state;
host->h_state++;
nlm_get_host(host);

11
fs/lockd/svc4proc.c
View file

@ -419,8 +419,6 @@ static __be32
nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
void *resp)
{
struct sockaddr_in saddr;
dprintk("lockd: SM_NOTIFY called\n");
if (!nlm_privileged_requester(rqstp)) {
@ -430,14 +428,7 @@ nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
return rpc_system_err;
}
/* Obtain the host pointer for this NFS server and try to
* reclaim all locks we hold on this server.
*/
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = argp->addr;
nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
nlm_host_rebooted(argp);
return rpc_success;
}

11
fs/lockd/svcproc.c
View file

@ -451,8 +451,6 @@ static __be32
nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
void *resp)
{
struct sockaddr_in saddr;
dprintk("lockd: SM_NOTIFY called\n");
if (!nlm_privileged_requester(rqstp)) {
@ -462,14 +460,7 @@ nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
return rpc_system_err;
}
/* Obtain the host pointer for this NFS server and try to
* reclaim all locks we hold on this server.
*/
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = argp->addr;
nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
nlm_host_rebooted(argp);
return rpc_success;
}

3
include/linux/lockd/lockd.h
View file

@ -239,8 +239,7 @@ void nlm_rebind_host(struct nlm_host *);
struct nlm_host * nlm_get_host(struct nlm_host *);
void nlm_release_host(struct nlm_host *);
void nlm_shutdown_hosts(void);
extern void nlm_host_rebooted(const struct sockaddr_in *, const char *,
unsigned int, u32);
void nlm_host_rebooted(const struct nlm_reboot *);
/*
* Host monitoring